What is PayFac?

According to PwC and the Singapore FinTech Association's Payments' State of Play 2026 report, Singapore's digital payments market is projected to grow at a CAGR of 18.3% and reach USD 480.6 billion by 2030¹.

As payment volumes grow, managing payments across multiple merchants becomes more complex. This is where the PayFac model comes in. It allows platforms to onboard merchants, accept payments, and manage settlements through a single payment infrastructure.

This guide explains how the PayFac model works, its benefits and challenges, and what businesses in Singapore should consider before adopting it.

What is a PayFac?

A payment facilitator, often called a PayFac, is a company that helps businesses accept card payments without setting up their own merchant accounts.

Instead, businesses are onboarded under the PayFac's master merchant account, which is identified by a master merchant ID (MID). It acts as the central account for every payment made across the platform.

Rather than applying directly to an acquiring bank, businesses join the PayFac as sub-merchants and process payments through this master MID. This usually means a shorter application process and faster access to card payments.

The PayFac also manages many of the responsibilities that come with accepting payments, including merchant onboarding, compliance checks, risk monitoring, and fund distribution.

For platforms and marketplaces, this creates a simpler way to offer payment services to their users. For merchants, it can reduce administrative work and make it easier to start accepting payments.

Common examples include:

• E-commerce platforms
• Marketplace businesses
• Booking platforms
• SaaS platforms
• Creator platforms
• Fundraising platforms

PayFac vs traditional merchant account

A traditional merchant account requires each business to apply directly with an acquiring bank or payment provider. The provider reviews the application, performs risk checks, and creates a separate merchant account.

With a PayFac, merchants skip that process. The PayFac holds one master account and brings merchants on directly.

PayFac vs payment processor

A payment processor handles the technical side of a transaction. It moves the data between the card network, the issuing bank, and the acquiring bank to get a payment approved.

A PayFac handles more than payments. It brings sub-merchants onto the platform, manages compliance requirements, and oversees how funds are paid out. Many PayFacs work with payment processors, but their role goes much further than processing transactions.

Simply put, a payment processor facilitates the transaction. A PayFac facilitates the entire merchant experience.

What are sub-merchants?

The businesses using the PayFac's platform are called sub-merchants.

Rather than opening their own merchant accounts, sub-merchants are onboarded under the PayFac's master MID. This typically involves a shorter application process and faster approval compared to traditional acquiring.

For sub-merchants, this means:

• Fewer direct relationships with banks or processors
• Faster access to card payments
• A more consistent payment experience within the platform

How does the PayFac model work?

The PayFac sits in the middle of a clear hierarchy: acquiring bank at the top, PayFac in the middle, sub-merchants at the bottom.

Here is how a typical transaction flows:

1. A customer pays. A buyer makes a card payment through a sub-merchant's checkout on the PayFac's platform.
2. The transaction is processed. The payment runs through the PayFac's master MID. The PayFac's payment processor communicates with the card network and the customer's bank to authorise the payment.
3. Funds settle to the PayFac. Once the transaction is approved, the acquiring bank settles the funds into the PayFac's master account, not directly to the sub-merchant.
4. The PayFac pays out the sub-merchant. The PayFac then distributes funds to the sub-merchant according to its payout schedule, after deducting any platform fees.

This structure gives the PayFac full visibility over money movement on its platform. It also means the PayFac decides the payout timing, fee structure, and how funds are split.

The bank approves the PayFac, not each merchant separately. From that point, the PayFac is accountable for everything that happens on its platform.

Choosing the right model

There are three main ways to approach payment facilitation:

Benefits of using a PayFac for Singapore businesses

The PayFac model offers several advantages. However, the benefits depend on your business model.

Faster merchant onboarding

Traditional merchant accounts take days or weeks to approve. Each merchant goes through their own application, credit check, and bank review.

With a PayFac, that process is centralised. The acquiring bank has already underwritten the PayFac. New merchants join as sub-merchants through a faster, automated process and can start accepting payments within hours.

Control over the payment experience

When merchants use a third-party provider, the checkout, support, and payment flow belong to that provider. The platform loses visibility and control.

A PayFac brings payments in-house. The platform sets the checkout flow, payout schedule, and fee structure. Merchants experience payments as part of the platform they already use, not a separate product bolted on.

Revenue from payments

For most platforms, payments start as a cost. The PayFac model changes that.

Platforms earn through transaction fees, processing margins, and currency conversion. More established platforms go further, offering merchant financing or corporate cards.

Simplified payment operations

Without a PayFac structure, each merchant manages their own payment relationship. Different providers, different reports, no central view.

A PayFac centralises payments, reporting, and compliance activities in one place. This can make it easier to track transactions, reconcile accounts, and maintain records as the business grows.

Support for cross-border payments

Many platforms in Singapore serve merchants or customers across different countries. This creates real challenges around currencies, payment methods, and payouts.

A PayFac helps manage this through a single system. Depending on the provider, businesses can support multiple currencies, offer local payment methods, and manage cross-border payouts without building separate infrastructure for each market. A Singapore marketplace with sellers in Malaysia and Indonesia, for example, can support DuitNow and QRIS alongside PayNow, all running through one setup.

This makes regional expansion more manageable without having to rebuild payment infrastructure each time.

Challenges and considerations of a payment facilitator

Many businesses focus on the benefits and overlook the responsibilities, it is important to understand the challenges as well.

1. Compliance and regulatory requirements

In Singapore, businesses facilitating payments at scale need to consider their obligations under the Payment Services Act (PSA), which is overseen by the Monetary Authority of Singapore (MAS)².

Depending on how a PayFac operates, it may require licensing³ and must follow rules around safeguarding funds, verifying sub-merchants, and managing risk.

PayFacs also need to comply with card network requirements and the Payment Card Industry Data Security Standard (PCI DSS)⁴, which governs how cardholder data is stored and processed.

Compliance is not a one-time task. It requires ongoing monitoring, regular audits, and periodic licence and registration renewals.

2. Fraud and chargeback liability

As the master merchant, a PayFac is typically responsible for fraud and chargebacks generated by its sub-merchants.

If a customer disputes a transaction or a sub-merchant violates payment rules, the acquiring bank will generally hold the PayFac accountable. This makes fraud prevention, merchant verification, and transaction monitoring critical parts of operating a PayFac.

Without strong controls in place, these costs can add up quickly.

3. Payout delays and cash flow impact

PayFacs control how and when sub-merchants receive their funds. Many operate on scheduled payout cycles, such as daily, weekly, or monthly payments, rather than releasing funds immediately after a transaction.

While this helps with risk management and reconciliation, it can affect cash flow for sub-merchants that rely on quick access to funds. Clear communication around payout timelines is therefore an important part of the PayFac model.

4. Operational complexity and cost

Becoming a PayFac requires significant investment in technology, compliance, and risk management.

Costs can include PCI DSS certification, merchant management systems, underwriting and compliance infrastructure, licensing, and ongoing fraud monitoring. For businesses building a traditional PayFac model, these costs can quickly reach hundreds of thousands or even millions of dollars.

The investment doesn't stop after launch. Ongoing compliance, risk management, staffing, audits, and licence renewals all add to the long-term cost of operating a PayFac.

For most Singapore businesses, the realistic path to payment facilitation is through a PayFac-as-a-Service provider. This means partnering with a third party that handles the licensing, compliance infrastructure, and risk management, while you focus on the product experience. You get many of the benefits of payment facilitation without bearing the full regulatory and financial burden yourself.

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Sources:

1. PWC- Digital Payments Stats
2. Monetary Authority of Singapore- Payments
3. Monetary Authority of Singapore- Licensing for Payment Providers
4. PCI Data Security Standard (PCI DSS)